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Land Use/Land Co.er Changes o. Ago.o.u Fo.est Reserve, o.un State, Nigeria Using Remo.e Sensing Techniques

o.en Jo.rnal o. Fo.estry 2020年第4期10卷 401-411页

作者： meshach o. aderele To.iyo.i S. Bo.a David o. o.e Federal University o. Techno.o.y Akure Nigeria University o. British Co.umbia Vancouver Canada

Remo.e sensing (RS) and GIS are impo.tant metho.s fo. land use assessment and land co.er transitio.. In this study, land use/land co.er changes in the Ago.o.u Fo.est Reserve, o.un State, Nigeria have been assessed. Landsat 5 TM, Landsat 7 ETM+ and Landsat 8 o.I were acquired fo. 1986, 2002 and 2017 respectively. The three scenes co.respo.ded to.path 190 and ro. 055 o. WRS-2 (Wo.ldwide Reference System). The pro.essing o. the imagery was preceded by the clipping o. the study area fro. the satellite image. The bo.ndary o. the reserve was carefully digitized and used to.clip the imagery to.pro.uce an image map o. the fo.est reserve. Using the supervised image classificatio. pro.edure, training sites were used to.pro.uce land use/land co.er maps. The same classificatio. scheme was used fo. the 1986, 2002 and 2017 images to.facilitate the detectio. o. change. The differences in the area co.ered by the different po.ygo.s between the three sets o. images were measured in km2. The results sho. that during 1986 and 2017, there is a dramatic increase o. build-up areas with a change o. 55.65 km2 and sparse vegetatio. (farmland and grassland) with a change o. 53.97 km2, while a dramatic decrease o. dense vegetatio. (fo.est areas) with a change o. 109.61 km2. The co.sequence o. these results is that o.er the years, the po.ulatio. o. peo.le living in the fo.est reserve has increased and many o. them are engaged in farming, leading to.an increase in farmland. In additio., lo.ging activities co.tinued unabated in the fo.est reserve, as demo.strated by a sharp increase in the defo.ested area within the reserve. The maps pro.uced in this study will serve as a planning to.l fo. the o.un State Fo.estry Department to.plan refo.estatio. activities fo. the fo.est reserve.

关键词： Remo.e Sensing Landsat Fo.est Reserve Geo.raphical Info.matio. System Land Use and Land Co.er Changes

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